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An Essex County Fire and Rescue Service statement said: "Crews were called to a road traffic collision on the westbound M25, in the Bell Common Tunnel, Epping.

"On arrival firefighters reported that a lorry was involved and one person was trapped.

The crash has caused severe delays

"Firefighters released the casualty by noon."

A Highways England tweet has now revealed that repairs to the Bell Common Tunnel are underway, including a damaged electrical box.

The tweet reads: "M25 anti-clockwise J27 - J26 BellCommonTunnel #Epping. Traffic has now been released and 2 of (4) lanes are now open. Contractors are on scene to make safe a damaged electrical box. Please allow extra time for your journey as delays of 2 hours remain on the approach."

Drivers heading in that direction should use alternate routes to avoid the M25 while the vehicles are recovered.